674 REPORT—1863. 
72. Limnea (Limnophysa) palustris, Mill. et auct.,=L. fragilis (as of Linn.), Hald., 
De Kay, Binn. (1st list), Rve. (hodie). {Non Linn., teste Hanl. in Ips. Linn. 
Conch., p.385]. +L. elodes, Say, Gld., C. B. Ad., Kiist.,-Z. Muttal- 
liana, Lea, Kiist., ?+L. plebeia, Gld.,4L. expansa, Hald., De Kay, Kist. 
NortHern Evropr, Asta, AND AMERICA:—Columbia River, Muttall; 
Puget Sound, Kennerley; Klamath Lake and Summer Lake, Or.; Rhett 
Lake and Wright’s Lake, Cal., Newberry: Clear Lake, Cal., Veatch; San 
Francisco, Rowell; Monterey, Canfield; Porcupine and Yuckron Rivers, Rus. 
America, Kennicott. Also from Pennsylvania westward to Pacific, and from 
this line northwards, wherever searched, even to interior of Russian Ame- 
rica; teste Binn. 
73. Limnea (Limnophysa) proxima, Lea, San Francisco, Cooper. Arroya San 
, Antonio, Trask. 
74. Limnea(Limnophysa) emarginata, Say, Hald., De Kay, Kiist..=Z. Ontariensis, 
Mublf., Kiist.,+-Z. serrata, Hald. New Enetanp To WasurineTon TER- 
RITORY. 
75. Limnea (Limnophysa) catascopium, Say, Hald., Gld., De Kay, Mrs. Gray, Pot. 
& Mich., Kiist.,4Z. pinguis, Say (non Dohrn), =Z. Virginiana, Lam., Desh., 
Deless., = Z. cornea, Val., = L. sericata, Ziegl. New ENGLAND TO 
Lewis River, AND THROUGH Brirish America; teste Binn. 
76. Limnea (Limnophysa) Adeline, Tryon. San Francisco. 
77. Limnea (Limnophysa) Traskii, Tryon. Mountain Lake, California. 
78. Limnea (Limnophysa) pallida, C. B. Ad., Hald., De Kay. San Francisco, 
Rowell; San Antonio Arroya, teste Lea. 
79. Limnea (Limnophysa) bulimoides, Lea, Hald., De Kay. Fort Vancouver. 
San Francisco, Rowell. Also Eastern States. (Check-List.) 
80. Limnea (Limnophysa) solida, Lea, Hald., De Kay,+Z. apicina, Lea, Kist. 
Oregon, Also Eastern States. (Check-List.) 
81. Limnea (Limnophysa) ferruginea, Hald., De Kay. Oregon. 
82. Pompholyx effusa, Lea, Add. Pitt River, Newberry; Sacramento River, 
teste Lea. 
83. Physa (Physa) Lordi, Baird. British Columbia, Lord ; east of Fort Colville, 
W. T., Am. N. P. B. Surv. 
84, Physa (Physa) gyrina, Say, De Kay, Kiist., C. B. Ad., Hald.,=Ph. elliptica, 
ea, De Kay,+Ph. cylindrica, De Kay,+Ph. Hildrethiana, Lea, Wash- 
ington Territory, Captain Simpson ; San Francisco, Rowell. 
85. Physa (Physa) ampullacea, Gld.,=Ph. bullata, Gld. (non Pot. & Mich.). 
Oregon, Cooper; Lakes Rhett and Upper Klamath, Newberry. 
86. Physa (Physa) Gabbii, Tryon. Sta. Ana Riv., Angelos Co. Also Mountain 
ake, California. 
87. Physa (Physa) heterostropha, Say, Gould, C. B. Ad., Desh., Kiist., De Kay, 
Mrs. Gray, Pot. & Mich., Eaton,+ Ph. fontana, Hald.,4+Ph. cylindrica, 
Newe.,+Ph. aurea, Lea, De Kay,+Ph. plicata, + Ph. glabra, De Kay, + Ph. 
osculans, Hald. (part),+ Ph. striata,+ Ph. subarata, Mke.,4+Ph. Charpentiert, 
+Ph. Phillipii, Kiist., + Ph. elliptica, + Ph. inflata, Lea,=Bulla crassula, 
Dillw., =B. fontinalis, Chemn., Schréter,= Cochlea neritoides, List. NortH 
America, passim :—Chiloncynck, Kennerley ; Hell Gate River, Newberry ; 
San Francisco and Washington Territory, Cooper; Los Angeles, teste Lea. 
Also from Texas to British America and Arctic regions, and from Atlantic 
to Pacific, teste Binn. 
+88. Physa (Physa) costata, Newe. Clear Lake, Cal., Veatch. 
89. Physa (Physa) virginea, Gld. San Francisco, Rowell. 
90. Physa (Physa) humerosa,Gld. RioColorado, Willamson; San Diego, P. R. R. £. 
91. Physa (Physa) virgata, Gld. San Diego, Webb; Los Angelos; Cal. Ac. N.S. 
several of which are perhaps but modifications of cireumboreal species which have been 
already traced to Hastern Asia. Even the series in Mus. Cum. are far from being accurate 
or complete. The inflexible rules of the British Museum have not yet allowed a single 
‘specimen of Dr. Baird’s species to be transmitted to America, even for comparison. 
